MBL8289 Overview
TABLE 1 - PIN DESCRIPTION Symbol Type Name and Function Vee GND SO, Sl, S2 ClK lOCK CRQlCK RESB ANYRQST lOB Power: The status input pins from an MBl8086, MBl 8088, MBl80186, MBl80188 or MBl8089 processor. The MBl8289 decodes these pins to initiate bus request and surrender actions.